WEATHER REPORT

Chill in the air may linger for a few days

November 03, 2009|By Tom Skilling

As daylight hours shorten by a little bit more than two minutes per day and the sun drops lower in the sky, it becomes increasingly more difficult to warm up after chilly early morning lows. Tuesday begins with readings in the 20s in outlying areas and 30s in Chicago, and under a cool high pressure air mass and northwesterly flow, it will be difficult to warm much higher than the mid to upper 40s. A weak cold front is forecast to move through northeast Illinois on Wednesday reinforcing the cold air with more northwesterly winds into Thursday, when conditions could begin to turn around.

Warmer days ahead

The upper air jet stream is expected to drift back north Thursday along the Canadian border. This will allow the return of southwesterly surface winds that in turn will pull warm air out of the Southern Plains into the Midwest. By Friday, highs in the area will approach 60 degrees and 60-degree highs should persist over the weekend and possibly into Monday.

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Weather Report is prepared by the WGN-TV Weather Center, where Tom Skilling is chief meteorologist. His forecasts can be seen Monday through Friday on WGN News at 11 a.m., 5 p.m. and 9 p.m.